1. Institute for Health Services Research and Health Economics Centre for Health and Society Faculty of Medicine Heinrich‐Heine‐University
2. Institute for Health Services Research and Health Economics German Diabetes Center at Heinrich‐Heine‐University, Leibniz‐Center for Diabetes Research Düsseldorf
3. German Center for Diabetes ResearchHelmholtz Zentrum München, German Research Center for Environmental Health (GmbH) Neuherberg
4. mediStatistica Neuenrade Germany
5. Institute of Epidemiology IIHelmholtz Zentrum München, German Research Center for Environmental Health (GmbH) Neuherberg
6. Institute of Health Economics and Health Care Management Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH) Neuherberg
7. Institute for Health Care Management and Research Essen University of Duisburg‐Essen Essen